Initial jets would be delivered with software fixes, other short-term remedies

Lockheed Martin Corp. will likely lose part of a $300 million incentive fee because of software issues in the first batch of F-35 fighters being delivered to the U.S. Marine Corps in the summer, a senior Pentagon official said Tuesday.

The Marines are due to become the first to field the stealthy jet, though its initial 10 planes will come with software fixes and other short-term remedies that won’t affect its combat readiness,...